Figure 3From: Evaluation of nanoparticle tracking analysis for total virus particle determinationShematical chromatograph of virus purification. Flow-through fraction (non- bound compounds), wash (weakly bound compounds washed from the column), elution 1 (the main virus fraction), elution 2 (elution of strongly bound impurities-usually host cell DNA). Selective elution in this case is achieved by increasing salt concentration (indicated with the grey line).Back to article page